Same Java error on several packs

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A

AuntieB

Guest
Title Same Java error on several packs

Launcher Type Curse App

Modpack several

Modpack version

Have you modified the pack? No

Link to log file

Details of the issue [18:58:25] [main/INFO]: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[18:58:26] [main/ERROR]: Unable to launch
java.lang.ClassNotFoundException: cpw.mods.fml.common.launcher.FMLTweaker
at java.net.URLClassLoader.findClass(Unknown Source) ~[?:1.8.0_121]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_121]
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) ~[?:1.8.0_121]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_121]
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:106) ~[launchwrapper-1.12.jar:?]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_121]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_121]
at java.lang.Class.forName0(Native Method) ~[?:1.8.0_121]
at java.lang.Class.forName(Unknown Source) ~[?:1.8.0_121]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:98) [launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option PermSize=256m; support was removed in 8.0


Getting this error on several packs when trying to launch
 
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